<template>
  <ul>
    <li><h4 :style="{opacity}">欢迎学习Vue</h4></li>
    <li>news001 <input type="text"/></li>
    <li>news002 <input type="text"/></li>
    <li>news003 <input type="text"/></li>
  </ul>
</template>

<script>
export default {
  name: "News",
  data() {
    return {
      opacity: 1
    }
  },
  beforeDestroy() {

  },
  mounted() {

  },
  // 路由特有的生命周期钩子，激活时调用
  activated() {
    this.timer = setInterval(() => {
      this.opacity -= 0.01;
      if (this.opacity <= 0) {
        this.opacity = 1;
      }
    }, 10);
  },
  // 组件失活事件
  deactivated() {
    clearInterval(this.timer);
  }
}
</script>

<style scoped>

</style>